Make games not disable Num Lock/Caps Lock/Scroll Lock

CookiePLMonster · Sep 17, 2023 · c538be0 · c538be0
1 parent 1755c2c
commit c538be0
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Showing 2 changed files with 65 additions and 1 deletion.
diff --git a/source/SilentPatchNFS90s.cpp b/source/SilentPatchNFS90s.cpp
@@ -448,6 +448,67 @@ namespace OGLThrashDriverLeak
  static auto* pLoadLibraryA_FixThrashDriver = &LoadLibraryA_FixThrashDriver;
 }
 
+namespace KeybdEventStub
+{
+ void WINAPI keybd_event_Stub(BYTE /*bVk*/, BYTE /*bScan*/, DWORD /*dwFlags*/, ULONG_PTR /*dwExtraInfo*/)
+ {
+
+ }
+
+ static void ReplaceFunction(void** funcPtr)
+ {
+ DWORD dwProtect;
+
+ auto func = reinterpret_cast<decltype(::keybd_event)**>(funcPtr);
+
+ VirtualProtect(func, sizeof(*func), PAGE_READWRITE, &dwProtect);
+ *func = &keybd_event_Stub;
+ VirtualProtect(func, sizeof(*func), dwProtect, &dwProtect);
+ }
+
+ static void RedirectImports()
+ {
+ const DWORD_PTR instance = reinterpret_cast<DWORD_PTR>(GetModuleHandle(nullptr));
+ const PIMAGE_NT_HEADERS ntHeader = reinterpret_cast<PIMAGE_NT_HEADERS>(instance + reinterpret_cast<PIMAGE_DOS_HEADER>(instance)->e_lfanew);
+
+ // Find IAT
+ PIMAGE_IMPORT_DESCRIPTOR pImports = reinterpret_cast<PIMAGE_IMPORT_DESCRIPTOR>(instance + ntHeader->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress);
+
+ for ( ; pImports->Name != 0; pImports++ )
+ {
+ if ( _stricmp(reinterpret_cast<const char*>(instance + pImports->Name), "user32.dll") == 0 )
+ {
+ if ( pImports->OriginalFirstThunk != 0 )
+ {
+ const PIMAGE_THUNK_DATA pThunk = reinterpret_cast<PIMAGE_THUNK_DATA>(instance + pImports->OriginalFirstThunk);
+
+ for ( ptrdiff_t j = 0; pThunk[j].u1.AddressOfData != 0; j++ )
+ {
+ if ( strcmp(reinterpret_cast<PIMAGE_IMPORT_BY_NAME>(instance + pThunk[j].u1.AddressOfData)->Name, "keybd_event") == 0 )
+ {
+ void** pAddress = reinterpret_cast<void**>(instance + pImports->FirstThunk) + j;
+ ReplaceFunction(pAddress);
+ return;
+ }
+ }
+ }
+ else
+ {
+ void** pFunctions = reinterpret_cast<void**>(instance + pImports->FirstThunk);
+
+ for ( ptrdiff_t j = 0; pFunctions[j] != nullptr; j++ )
+ {
+ if ( pFunctions[j] == &keybd_event )
+ {
+ ReplaceFunction(&pFunctions[j]);
+ return;
+ }
+ }
+ }
+ }
+ }
+ }
+}
 
 void OnInitializeHook()
 {
@@ -456,6 +517,9 @@ void OnInitializeHook()
 
  auto Protect = ScopedUnprotect::UnprotectSectionOrFullModule(GetModuleHandle(nullptr), ".text");
 
+ // Make games not disable Num Lock/Caps Lock/Scroll Lock
+ KeybdEventStub::RedirectImports();
+
  if (ShouldEnableAffinityChanges() && AffinityChanges::Init())
  {
  bool bPinnedSpecificThreads = false;

diff --git a/source/VersionInfo.lua b/source/VersionInfo.lua
@@ -1,5 +1,5 @@
 defines { 
- "rsc_FullName=\"SilentPatch for NFS2: Special Edition, NFS3: Hot Pursuit, NFS4: High Stakes\"",
+ "rsc_FullName=\"SilentPatch for NFS2: Special Edition, NFS3: Hot Pursuit, NFS4: High Stakes, NFS: Porsche 2000\"",
  "rsc_MinorVersion=0",
  "rsc_RevisionID=1",
  "rsc_BuildID=0",